Math Module: How can I add missing math symbols in LibreOffice Writer?

[matthewslouismarie]

I need to insert specific math caracters in a math formula in LibreOffice Writer, specifically, the arrow from bar (U+27FC) symbol.

However, this element is not listed neither in the “elements” panel nor in the “Symbols” subwindow (accessible from the “Tools” toolbar).

I tried entering directly the symbol’s code in the formula (with the percent sign) and directly in the symbol list, but it is either not interpreted at all or interpreted incorrectly if I use the U0F57D symbol (from the MathML list of symbols).

I am aware of the existing posts related to the same problem but they do not seem to provide a solution.

I am using Windows 10 and LibreOffice 7.5.4.2.

[ajlittoz]

Type U+27FC immediately followed by Alt+X. If there is no ambiguity you can omit U+.

If Math objects or does not format the glyph as you would like, add quotation marks " around it.

[matthewslouismarie]

Thanks, this works in a formula.